We all know that Rihanna has an interest in ink. (Not gonna lie… it’s kinda an addiction) She’s upped the ante and was spotted in a tattoo shop called East Side Ink in the East Village of New York City last night (7.1) pretending to apprentice. She inked up at least four different people with little umbrellas with an R on them. I think I’d let Rihanna tattoo me. I mean, I’ve already got three and if you place your $hit right, no one will ever know if she screwed up…